Título

Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror

Autor

BALDEMAR IBARRA ESCAMILLA

EVGENY KUZIN

Nivel de Acceso

Acceso Abierto

Resumen o descripción

We analyse numerically the capabilities of a power-symmetric nonlinear optical loop mirror (NOLM) in the ultrashort pulse regime for high-quality amplitude regeneration of an optical signal. The device, which operates through nonlinear polarisation rotation, includes twisted, anomalous-dispersion fibre and a quarter-wave retarder. For particular adjustments of the retarder orientation, and a circularly polarised input beam, the output energy characteristic flattens near the switching energy, a property that can be used to eliminate large amplitude fluctuations in an optical signal. The group velocity mismatch between polarisation components introduced by twist is mitigated by the interplay between anomalous dispersion and the nonlinear Kerr effect, although strong twist should be avoided as it still introduces substantial pulse distortion. Contrary to other designs, where a plateau characteristic requires a large power imbalance between the counter-propagating beams, both pulses in the present scheme can be simultaneously close to fundamental solitons, which allows a substantial widening of the plateau for particular pulse parameters. Good quality, nearly transform-limited pulses are obtained in this case at the NOLM output. The device is applicable for the regeneration of ultrafast data streams in which the signal-to-noise ratio is severely deteriorated.

Editor

Optics

&

Laser Technology

Fecha de publicación

2009

Tipo de publicación

Artículo

Versión de la publicación

Versión aceptada

Formato

application/pdf

Idioma

Inglés

Relación

&

Laser Technology. Vol.41(4) 384–391

Audiencia

Estudiantes

Investigadores

Público en general

Sugerencia de citación

Pottiez, O., et al., (2009). Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror, Optics

Repositorio Orígen

Repositorio Institucional del INAOE

Descargas

348

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